Modeling the Dynamic Landscape Evolution of a Volcanic Coastal Environment Under Future Climate Trajectories
As anthropogenic forcing continues to rapidly modify worldwide climate, impacts on landscape changes will grow. Olivine weathering is a natural process that sequesters carbon out of the atmosphere, but is now being proposed as a strategy that can be artificially implemented to assist in the mitigati...
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ftdoajarticles:oai:doaj.org/article:598a493d7d9e47af9d7c1aa028bb5ef5 2023-05-15T13:35:05+02:00 Modeling the Dynamic Landscape Evolution of a Volcanic Coastal Environment Under Future Climate Trajectories Kyle Manley T. Salles R. D. Müller 2020-10-01T00:00:00Z https://doi.org/10.3389/feart.2020.550312 https://doaj.org/article/598a493d7d9e47af9d7c1aa028bb5ef5 EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/feart.2020.550312/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2020.550312 https://doaj.org/article/598a493d7d9e47af9d7c1aa028bb5ef5 Frontiers in Earth Science, Vol 8 (2020) enhanced silicate weathering sedimentation climate change landscape evolution carbon sequestration olivine Science Q article 2020 ftdoajarticles https://doi.org/10.3389/feart.2020.550312 2022-12-31T03:24:56Z As anthropogenic forcing continues to rapidly modify worldwide climate, impacts on landscape changes will grow. Olivine weathering is a natural process that sequesters carbon out of the atmosphere, but is now being proposed as a strategy that can be artificially implemented to assist in the mitigation of anthropogenic carbon emissions. We use the landscape evolution model Badlands to identify a region (Tweed Caldera catchment in Eastern Australia) that has the potential for naturally enhanced supply of mafic sediments, known to be a carbon sink, into coastal environments. Although reality is more complex than what can be captured within a model, our models have the ability to unravel and estimate how erosion of volcanic edifices and landscape dynamics will react to future climate change projections. Local climate projections were taken from the Australian government and the IPCC in the form of four alternative pathways. Three additional scenarios were designed, with added contributions from the Antarctic Ice Sheet, to better understand how the landscape/dynamics might be impacted by an increase in sea level rise due to ice sheet tipping points being hit. Three scenarios were run with sea level held constant and precipitation rates increased in order to better understand the role that precipitation and sea level plays in the regional supply of sediment. Changes between scenarios are highly dependent upon the rate and magnitude of climatic change. We estimate the volume of mafic sediment supplied to the erosive environment within the floodplain (ranging from ∼27 to 30 million m3 by 2100 and ∼78–315 million m3 by 2500), the average amount of olivine within the supplied sediment under the most likely scenarios (∼7.6 million m3 by 2100 and ∼30 million m3 by 2500), and the amount of CO2 that is subsequently sequestered (∼53–73 million tons by 2100 and ∼206–284 million tons by 2500). Our approach not only identifies a region that can be further studied in order to evaluate the efficacy and impact of enhanced silicate ... Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Frontiers in Earth Science 8 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
enhanced silicate weathering sedimentation climate change landscape evolution carbon sequestration olivine Science Q |
spellingShingle |
enhanced silicate weathering sedimentation climate change landscape evolution carbon sequestration olivine Science Q Kyle Manley T. Salles R. D. Müller Modeling the Dynamic Landscape Evolution of a Volcanic Coastal Environment Under Future Climate Trajectories |
topic_facet |
enhanced silicate weathering sedimentation climate change landscape evolution carbon sequestration olivine Science Q |
description |
As anthropogenic forcing continues to rapidly modify worldwide climate, impacts on landscape changes will grow. Olivine weathering is a natural process that sequesters carbon out of the atmosphere, but is now being proposed as a strategy that can be artificially implemented to assist in the mitigation of anthropogenic carbon emissions. We use the landscape evolution model Badlands to identify a region (Tweed Caldera catchment in Eastern Australia) that has the potential for naturally enhanced supply of mafic sediments, known to be a carbon sink, into coastal environments. Although reality is more complex than what can be captured within a model, our models have the ability to unravel and estimate how erosion of volcanic edifices and landscape dynamics will react to future climate change projections. Local climate projections were taken from the Australian government and the IPCC in the form of four alternative pathways. Three additional scenarios were designed, with added contributions from the Antarctic Ice Sheet, to better understand how the landscape/dynamics might be impacted by an increase in sea level rise due to ice sheet tipping points being hit. Three scenarios were run with sea level held constant and precipitation rates increased in order to better understand the role that precipitation and sea level plays in the regional supply of sediment. Changes between scenarios are highly dependent upon the rate and magnitude of climatic change. We estimate the volume of mafic sediment supplied to the erosive environment within the floodplain (ranging from ∼27 to 30 million m3 by 2100 and ∼78–315 million m3 by 2500), the average amount of olivine within the supplied sediment under the most likely scenarios (∼7.6 million m3 by 2100 and ∼30 million m3 by 2500), and the amount of CO2 that is subsequently sequestered (∼53–73 million tons by 2100 and ∼206–284 million tons by 2500). Our approach not only identifies a region that can be further studied in order to evaluate the efficacy and impact of enhanced silicate ... |
format |
Article in Journal/Newspaper |
author |
Kyle Manley T. Salles R. D. Müller |
author_facet |
Kyle Manley T. Salles R. D. Müller |
author_sort |
Kyle Manley |
title |
Modeling the Dynamic Landscape Evolution of a Volcanic Coastal Environment Under Future Climate Trajectories |
title_short |
Modeling the Dynamic Landscape Evolution of a Volcanic Coastal Environment Under Future Climate Trajectories |
title_full |
Modeling the Dynamic Landscape Evolution of a Volcanic Coastal Environment Under Future Climate Trajectories |
title_fullStr |
Modeling the Dynamic Landscape Evolution of a Volcanic Coastal Environment Under Future Climate Trajectories |
title_full_unstemmed |
Modeling the Dynamic Landscape Evolution of a Volcanic Coastal Environment Under Future Climate Trajectories |
title_sort |
modeling the dynamic landscape evolution of a volcanic coastal environment under future climate trajectories |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://doi.org/10.3389/feart.2020.550312 https://doaj.org/article/598a493d7d9e47af9d7c1aa028bb5ef5 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
Frontiers in Earth Science, Vol 8 (2020) |
op_relation |
https://www.frontiersin.org/article/10.3389/feart.2020.550312/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2020.550312 https://doaj.org/article/598a493d7d9e47af9d7c1aa028bb5ef5 |
op_doi |
https://doi.org/10.3389/feart.2020.550312 |
container_title |
Frontiers in Earth Science |
container_volume |
8 |
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1766060774040535040 |